Table 1. Attack rates, risk differences and relative risks for food items consumed by cohort, New South Wales, Australia, 2014.
| Food | Number of persons who | Difference (%) | Risk ratio | Lower 95% CI | Upper 95% CI | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ate specified food | Did not eat specified food | |||||||||
| Sick | Total | % sick | Sick | Total | % sick | |||||
| Sushi/rice ball | 12 | 22 | 54.5 | 0 | 1 | 0.0 | 54.5 | 0 | – | – |
| Fried chicken | 11 | 21 | 52.4 | 1 | 2 | 50.0 | 2.4 | 1.0 | 0.2 | 4.4 |
| Pickled grilled salmon | 12 | 22 | 54.5 | 0 | 1 | 0.0 | 54.5 | 0 | – | – |
| Bottled water | 3 | 7 | 42.8 | 9 | 16 | 56.2 | −13.4 | 0.8 | 0.3 | 1.9 |
| Yogurt | 11 | 21 | 52.4 | 1 | 2 | 50.0 | 2.38 | 1.0 | 0.2 | 4.4 |
| Dried fruit | 6 | 10 | 60.0 | 6 | 13 | 46.1 | 13.8 | 1.3 | 0.6 | 2.8 |
| Muesli | 4 | 8 | 50.0 | 8 | 15 | 53.3 | −3.3 | 0.9 | 0.4 | 2.2 |
| Coffee with milk | 9 | 14 | 64.3 | 3 | 9 | 33.3 | 30.9 | 1.9 | 0.7 | 5.3 |
| Tea with milk | 2 | 7 | 28.6 | 10 | 16 | 62.5 | −33.9 | 0.5 | 0.1 | 1.5 |
| Water – plain | 4 | 9 | 44.4 | 8 | 14 | 57.1 | −12.7 | 0.8 | 0.3 | 1.8 |
| Orange juice | 1 | 1 | 100.0 | 11 | 22 | 50.0 | 50.0 | 2.0 | 1.3 | 3.0 |
CI, confidence interval.